Web & graphic design notes

NuSOAP and proxy server call bug

We were recently playing with NuSOAP library in order to make SOAP calls to a third-party web service which works on a non-standard port. In order to get it to work we used a proxy server. NuSOAP toolkit provides an easy solution to make SOAP calls to WSDL-based services and you can setup everything you need, literally in a few minutes.

Everything you need to make SOAP call via proxy server is to write:

require_once('include/nusoap.php');
define("WEBSERVICE_LINK", 'http://your_webservice_provider/link?wsdl');
$client = new nusoap_client(WSDL_LINK, wsdl);   
$client->setHTTPProxy('proxy_server' , poxy_port , 'proxy_user' , 'proxy_password');

Fortunately, we have never faced any problems with NuSOAP library before, but this time we discovered some weird activity using SOAP through proxy server authorization. Script couldn’t open socket connection. We found a quick solution at SourceForge forum.

The problem was in the library itself, specifically in the nusoap.php file. In case the forum link is not accessible, please do the following:

file:nusoap.php
class: soap_transport_http
function: connect($connection_timeout=0,$response_timeout=30)

replace code:

// open socket 
if($connection_timeout > 0)
{
$this->fp = @fsockopen( $host, $this->port, $this->errno, $this->error_str, $connection_timeout); 
} else { 
$this->fp = @fsockopen( $host, $this->port, $this->errno, $this->error_str);
}

with:

// open socket 
if($connection_timeout > 0)
{
$this->fp = @fsockopen( $host, $port, $this->errno, $this->error_str, $connection_timeout);
} else {
$this->fp = @fsockopen( $host, $port, $this->errno, $this->error_str);
}

The current version (0.9.5) on SourceForge still contains the wrong code and should be fixed soon...